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Wiring / sound interference

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Minwah:

Something interesting I just noticed...

For my Dreamcast cable the audio is affected as described.  But for my Xbox lead the video is affected but not the audio.

SeanCyrusTowel:

I don't want to sound ignorant after I post this so here is a disclaimer...

Minwah:


--- Quote from: SeanCyrusTowel on October 17, 2005, 08:30:56 pm ---My guess is that when your printer cable touches the metal it is basically doing the same thing and creating a connection between your audio feed and your video feed.

--- End quote ---

I think you're right.  I am going to ground the outer part of the vga connectors (I think this is the problem) and change all plugs to plastic ones just in case.  I need to add a connector to the leads anyway so this is good timing - I can test it all out before putting my cab fully back together.

Cheers

Rocky:


--- Quote from: Abomination on October 17, 2005, 10:07:26 am ---Yeah, you will probably need shielded cables...
--- End quote ---


Minwah:


--- Quote from: Rocky on October 18, 2005, 08:57:40 am ---I don't think that is accurate. In almost every arcade game, the speaker wires are bundled with the marquee light power wires.

--- End quote ---

Well I think the theory is correct (I have heard this many times before).  But in old arcade games (& in mine) the noise generated is probably small enough not to notice, especially when the game is making a noise.

In situations where audio quality is important this is definately good advice tho.  I must admit I used to have my surround speaker cables right next to my sub power cable in some wall trunking.  I can't say it caused any noticable noise...

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